Finding the Fourth Proportional to 10,216.64, 15,321.72 and 3,976.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216.64 : 15,321.72 = 3,976.24 : x
2. Step 2: Convert to fraction form
   10,216.64/15,321.72 = 3,976.24/x
3. Step 3: Cross multiply
   10,216.64x = 15,321.72 × 3,976.24
4. Step 4: Simplify right side
   10,216.64x = 60,922,835.93
5. Step 5: Solve for x
   x = 60,922,835.93/10,216.64
6. Step 6: Final answer
   x = 5,963.10